公开(公告)号：US10685773B2

公开(公告)日：2020-06-16

申请号：US14652716

申请日：2013-12-05

Applicant: ABB SCHWEIZ AG

Inventor： Adam Michalik ,  Patricia Ricketts ,  Massimo Carmignoto ,  Jayram Yadava ,  Roberto Zannol ,  Miljenko Hrkac ,  Alessandro Mattozzi ,  Claire Pitois ,  Emmanouil Logakis ,  Harald Martini ,  Ilario Scian ,  Orlando Girlanda ,  Rudi Velthuis ,  Spiros Tzavalas

IPC: H01F27/10 ,  H01F27/14 ,  B29C45/00 ,  H01F27/24 ,  H01F27/28 ,  H01F41/00 ,  H01B3/47 ,  H01F27/32 ,  B29K101/12 ,  B29K309/00 ,  B29K105/12 ,  B29L31/34

Abstract: The present invention relates to an electrical transformer comprising an electrical insulator and a winding of an electrical conductor around a core, said insulator being formed of an essentially non-porous composite material comprising a resin matrix and up to 85% by weight of insulating fibres surrounded by the resin matrix, the composite material having a maximum moisture content of less than 0.5% by weight at 23° C. and 50% relative humidity.